How many MCP servers charge agents per call?
Which ones, by adoption?
| package | weekly | what it says | evidence |
|---|---|---|---|
run402-mcp | 3,526 | x402 pay-per-call infra for agents: $0.03 image generation, Postgres, auth, storage, funct | measured |
intel-asrai-mcp | 2,683 | MCP server for AI-powered web search via intel.asrai.me with x402 micropayments on Base | measured |
x402-trinity | 2,057 | Give an agent a wallet. Pays for x402 resources within hard limits. Base + USDC, gasless. | measured |
agentcash | 1,737 | Generic MCP server for calling x402-protected APIs with automatic payment handling | measured |
@vauban-org/pay-mcp | 1,115 | x402 payment tools for MCP clients: pay, verify a STARK receipt, hash per RFC 8785. No acc | measured |
@aibtc/mcp-server | 1,083 | Bitcoin-native MCP server for AI agents: BTC/STX wallets, DeFi yield, sBTC peg, NFTs, and | measured |
@arispay/payagent-mcp | 923 | Pay x402 APIs in USDC on Base, Solana, and BNB Chain with spend mandates, receipts, idempo | measured |
agent402-mcp | 878 | Agentic Finance: 500+ tools for AI agents over x402 or MPP, free via PoW, or prepaid card | measured |
minia2a-mcp | 838 | minia2a.uk x402 marketplace — 1,600+ pay-per-call API services with built-in USDC micropay | measured |
@blockrun/mcp | 636 | Web search, deep research, prediction markets & crypto data for AI agents. Pay per call vi | measured |
toll402-mcp | 589 | x402 pay-per-call tools for agents: web, PDF, provenance, 4M-business directory, paid list | measured |
capacity-attest | 535 | Signed delivery claims for x402 capacity trades: GPU-hours, storage, API credits, bandwidt | measured |
tollboothswap-mcp | 509 | Token swaps and honeypot/rug checks for AI agents on 8 chains, paid per-call in USDC via x | measured |
@xrpl-utilities/mcp | 467 | XRPL data tools for AI agents: wallet classifier, signals, RWA tracker, ETF flows. Pay via | measured |
@hpp-io/x402-mcp-bridge | 454 | MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per | measured |
Why does the distinction between 'says' and 'does' matter here?
Because money is involved. A keyword in a description costs an author nothing — this index already had to stop trusting npm keywords when a Yahoo Finance client turned out to declare mcp, agent and skill. tashan can tell you how many packages make the claim, and what their upkeep, advisories and provenance look like. It cannot tell you a payment endpoint honours what it charges for.
Is anyone worried about this already?
Yes, and it is in the corpus: at least one server exists purely to “verify x402 payment endpoints before an AI agent pays”, with scam scoring. A market that has grown its own fraud-checking layer is a market with fraud in it.
How do I check one before my agent pays it?
curl -s 'https://tashan.sh/v0.1/lookup?name=<package>'Free, no account. You get the score, the advisories at the version you would install, whether it was built in CI with attestation, and what it declares it can reach. None of that is a guarantee about a payment endpoint — it is the public evidence about the package serving it.
FAQ
Does tashan take agent payments?
The endpoints are built and quote a price in every 402; settlement is not enabled yet, and until it is we quote no payment option we cannot verify.
Is this list current?
It is recounted from npm descriptions every night, and the page does not render at all below 25 — a table of six would be noise dressed as a trend.
This article and every score it links to are free, no account. Check your own config free too. Pro adds the series behind each row, and names a replacement when one is dying.
- The whole series behind any row, back to the first day we measured it
- The replacement, named — not just the news that something died
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